Process for the production of lead metal niobates

Details Process for the production of lead metal niobates Process for the production of lead metal niobates

1993-05-28

1994-02-22

Cooper, Jack

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

252 629, 423594, 423595, 423599, 501134, 501135, C01G 3300

Patent

active

052884740

ABSTRACT:
Process for the production of phase-pure highly reactive lead metal niobates of perovskite structure corresponding to the general formula Pb.sub.3 Me(II)Nb.sub.2 O.sub.9 or Pb.sub.2 Me(III)NbO.sub.6, where Me.dbd.Mg, Fe, Co, Ni, Cr, Mn, Cd, Cu and/or Zn, in which perovskite intermediates are formed from corresponding salt solutions, separated off, dried and calcined at temperatures of 500 to 1000.degree. C.

REFERENCES:
patent: 3231328 (1966-01-01), Pechini
patent: 4696810 (1987-09-01), Shiraski et al.
patent: 4874598 (1989-10-01), Oda et al.
patent: 5168095 (1992-12-01), Munakata et al.
Journal of the American Ceramic Society (vol. 67, No. 5) "Delectric Properties of Lead-Magnesium Niobate Ceramics" S. L. Swartz, T. R. Shrout, W. A. Schulze, and L. E. Cross, pp. 311-315.
Advances in Ceramics, vol. 21, Ceramic Powder Science, "Polymeric Synthesis of Lead Magnesium Niobate Powders"; H. U. Anderson, M. J. Pennell, and J. P. Guha; .RTM.1987; pp. 91-98.
Applied Physics Letter-"Dielectric and Electro-Optic Properties of Lead Niobate" vol. 10, No. 5; W. A. Bonner, E. F. Dearborn, J. E. Geusic, H. M. Marcos and L. G. van Uitert, Mar. 1, 1967; pp. 163-165.
Communications of the American Ceramic Society-"Low Temperature Synthesis Route to MgNb.sub.2 O.sub.6 "; Harold. S. Horowitz; May 1988; pp. C250-C251.

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